The Oil Rig produces Oil and Passengers, the latter one is also accepted as cargo. Being the only industry (not counting game-changing NewGRFs) that is constructed entirely on water, it is also only found in the temperate climate.

Another specialty about the Oil Rig is that it is a neutral station complete with built-in dock for ships and helipad for helicopters. Every company can transport to and from these facilities as soon as its construction is finished.